They recently celebrated their son's second birthday, inviting 15 of his young friends over for a backyard party.

She said: "It was a lot of fun... and it was a really special celebration. We had a little bubble machine and the kids loved it. We also had little bunny rabbits and chickens."

Kerr said that "communication and honesty" are key components to a successful marriage, and revealed that although they often spend time apart, they work hard to stay in touch.

On factors that help the relationship, she added: "Lots of Skype. Especially now that we have our son. I'm not much of a talking on the phone person. I prefer to text. It's always very hard to get me on the phone."

Kerr insisted that she is still determined to keep Flynn in touch with his Australian heritage, especially via local cuisine.